Dual function composite oxygen transport membrane
First Claim
1. A dual function composite oxygen transport membrane, said dual function membrane comprising:
- a porous substrate having a first side and an opposing side, a plurality of mixed conducting oxygen transport layers, and a catalyst layer for catalyzing endothermic reactions, wherein the plurality of mixed conducting oxygen transport layers are formed on the first side of the porous substrate and the catalyst layer is coated on the opposing second side of the porous substrate, wherein a thickness of the catalyst layer is at least 10 microns.
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Abstract
A dual function composite oxygen transport membrane having a layered structure of mixed conducting oxygen transport materials on a first side of a porous substrate and a reforming catalyst layer on an opposing second side of the porous substrate. The layered structure of the mixed conducting oxygen transport materials contains an intermediate porous layer of mixed conducting oxygen transport materials formed on the porous substrate with a dense impervious layer of mixed conducting oxygen transport materials over the intermediate porous layer, and an optional surface exchange layer of mixed conducting oxygen transport materials over the dense impervious layer. The layered structure and the reforming catalyst layer are formed in separate steps.
296 Citations
15 Claims
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1. A dual function composite oxygen transport membrane, said dual function membrane comprising:
- a porous substrate having a first side and an opposing side, a plurality of mixed conducting oxygen transport layers, and a catalyst layer for catalyzing endothermic reactions, wherein the plurality of mixed conducting oxygen transport layers are formed on the first side of the porous substrate and the catalyst layer is coated on the opposing second side of the porous substrate, wherein a thickness of the catalyst layer is at least 10 microns.
- View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A method of forming a dual function composite oxygen transport membrane, said method comprising:
- providing a porous substrate having a first side and an opposing second side;
forming a layer structure of mixed conducting materials in a sintered state on the first side of the porous substrate, coating a catalyst layer on the opposing second side of the porous substrate for catalyzing endothermic reactions, wherein a thickness of the catalyst layer is at least 10 microns. - View Dependent Claims (10)
- providing a porous substrate having a first side and an opposing second side;
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11. A method of forming a dual function composite oxygen transport membrane, said method comprising:
- providing a porous substrate having a first side and an opposing second side;
forming an intermediate porous layer on the first side of the porous substrate;
forming a dense layer over the intermediate porous layer, forming a surface exchange layer over the dense layer, and coating a catalyst layer on the opposing second side of the porous substrate, wherein a thickness of the catalyst layer is at least 10 microns. - View Dependent Claims (12, 13, 14, 15)
- providing a porous substrate having a first side and an opposing second side;
Specification